Add all ingredients for the garlic sauce into a small saucepan at low heat. Heat until garlic has softened which is about 8 minutes. (The original instructions tell you to add lime juice, salt and crushed red pepper afterwards but I accidentally added all at once, the first time I made this recipe, and have made it using the original instructions, I like making it this way better.)
Fajitas
Heat a cast iron skillet at high heat. Add salt and pepper to the chicken breasts. Drizzle one tablespoon of oil over both sides of the breasts. Add the chicken to the skillet, turn heat down to medium high and cook for 3-4 minutes per side. Remove and place on a cutting board and tent with foil. Allow chicken to rest for five minutes.
Add onions and bell peppers to the empty skillet and add 1/4 teaspoon salt. Cook onions and peppers for 5-8 minutes until browned and both are softened. Make sure to stir the onions and peppers to ensure they don't stick to the skillet. Remove skillet from heat when finished.
Slice chicken into strips and add to skillet with onions and peppers. Add the garlic sauce and stir using tongs to evenly distribute the sauce. Season with salt and pepper to taste (if you would like) and serve with tortillas and condiments.
**Warm your tortillas by wrapping them in wax paper and placing them on a plate and microwaving them for about 30 seconds.